Would you have to come off before the season? If so, you would be losing everything, strength, size, recovery, aggression during the season. just asking for an injury. Plus that amount of size will really slow you down.
If your are gonna do it, run 750- gram of test (sus, E, or c) a week. and GH 4-5 i.u. a day. Also IGF-1 and insulin(cant recommend dose on these as i dont know.) Swithch to test prop 2 months before the season to let the long esters clear out.
As the season appraoches switch to test prop as it will clear your system faster than the other esters. Once youve tested hop back on the prop. Stay on the GH and igf-1, insulin. regardless as its not detectable.
No deca, eq or pretty much anything else as they are detectable for a LONG time.
If the tests are random, forget about it.
You gotta have your diet and training DIALED!! Because you need to keep your cardio, agility and flexibility while gaining this size.
If you have to do this, you are not meant to play linebacker at that level.